[PATCH v3 03/34] iommu/amd: Implement iommu_ops->def_domain_type call-back

Joerg Roedel
2020-04-29T13:37:40Z

Implement the new def_domain_type call-back for the AMD IOMMU driver.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/amd_iommu.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 20cce366e951..73b4f84cf449 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2661,6 +2661,20 @@ static void amd_iommu_iotlb_sync(struct iommu_domain *domain,
amd_iommu_flush_iotlb_all(domain);
}

+static int amd_iommu_def_domain_type(struct device *dev)
+{
+ struct iommu_dev_data *dev_data;
+
+ dev_data = get_dev_data(dev);
+ if (!dev_data)
+ return 0;
+
+ if (dev_data->iommu_v2)
+ return IOMMU_DOMAIN_IDENTITY;
+
+ return 0;
+}
+
const struct iommu_ops amd_iommu_ops = {
.capable = amd_iommu_capable,
.domain_alloc = amd_iommu_domain_alloc,
@@ -2680,6 +2694,7 @@ const struct iommu_ops amd_iommu_ops = {
.pgsize_bitmap = AMD_IOMMU_PGSIZES,
.flush_iotlb_all = amd_iommu_flush_iotlb_all,
.iotlb_sync = amd_iommu_iotlb_sync,
+ .def_domain_type = amd_iommu_def_domain_type,
};

/*****************************************************************************
--
2.17.1